After 566 days and nights, the first large-diameter shield construction project of China Railway Shanhe in Shenzhen was completed.

April 21, 10:58 a.m.，China Railway Shanhe No.37 Shield Machine Builds Pipe Gallery 14 from Shenzhen Line 14GL-Lot 101 Work Area IV 16#~15#The comprehensive well interval is broken out.，It marks the first large-diameter shield construction project of China Railway Shanhe in Shenzhen.。It is reported that，The equipment has been launched in a large split since September 28, 2021.，After 566 days and nights, the construction task of the whole line has been successfully completed.。

，Duration 00:44

The project has 15#~19#Four shield interval tunnels of the comprehensive shaft，China Railway Shanhe has invested two sets of the same specifications here.φ8830mmComposite earth pressure balance Shield Machine（They are respectively numbered as China Railway Shanhe 37 and China Railway Shanhe 38.）And the whole shield construction management team，Among them, Unit 37 undertakes 17#~16#And 16#~15#Construction task of comprehensive well interval，Unit 38 undertakes 18#~17#And 18#~19#Construction task of comprehensive well interval。

This run-through 16#~15#The total length of the comprehensive well interval is about 1,134m，The minimum horizontal curve radius of the section is 450m.，The maximum longitudinal gradient is 16.8‰，The designed buried depth of the inner bottom of the tunnel is about 31.361~48.136 meters。The construction stratum is mainly moderately weathered sandstone.，Strata such as cloddy and highly weathered sandstone，There are many fault zones and a long distance through the Shuiguan Expressway.、Hangzhou-Shenzhen Railway Steel Bridge、Major risk sources such as sub-high pressure gas pipes。Among，The main pavement side crossing section of Shuiguan Expressway is 615 meters long.、The length of the crossing section is 382.5 meters，It brings a lot of challenges to shield construction.。

In view of the above construction difficulties，China Railway Shanhe and project team members from equipment selection、Technical planning、Fine control and implementation of construction management and parameter control，Construction quality、Progress of the process（Up to 230 rings and 345 meters in a single month）And land subsidence control（The settlement of the main pavement of Shuiguan Expressway is controlled at 5mmWithin）And other aspects have been highly praised by the owners and subway companies at all levels.，It has also accumulated valuable experience for China Railway Shanhe in the subsequent construction of similar strata.。

The completion of China Railway Shanhe 37 machine is a milestone event in the field of China Railway Shanhe shield construction.。Future，China Railway Shanhe will better uphold“Create value for customers”The idea of，With high quality、High standards、High efficiency，Make it green、Environmental protection、Technology、Quality engineering，To contribute to the continuous construction of beautiful Dawan District, China Railway Shanhe people's strength.。

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